Artificial teeth



Sept, 25, 1928. 1,685,289 I c. G. MILLER ARTIFICIAL TEETH Filed Sept. 18, 1925' Patented Sept. 25, lQZS.

CLEMENT 'GLMILLER, on ansas crry, MIssoUnI.

ABTIF-IOIAI TEETH.

Application filed September 18, 1825. Serial No..57,152.

My invention relates to artificial teeth and metal parts designed use indental bridge work. 1 i v In methods now in use for abridging spaces between abutments with artificial teeth, gold teeth are used or porcelain and gold or noble metal alloy parts are used The metal parts of the teeth are soldered to'the crowns, inlays or attachments used for the abutinents, the

porcelain being attachedby metal pins baked into the porcelain or by holes passingthrough or part way through the porcelain toward the occlusal surface; metal pins fit in the holes and connect t0.a inetalbase or occlusal sur face. In other cases, the metal supports the lingual, niesial and distal sides of the porcelain teeth. 'lVhen metal pins are not baked into the porcelain, cement is used to hold the porcelain and gold. together.

My invention consists of porcelain artificial teeth with metal parts that fit in the mesial and distal sides only, and presents an artificial restoration with porcelain lingual, occlusal, buccal, labial, and cervical portions similar in shape to the natural teeth. The porcelain is countersunk at the mesial and distal contact sections and beyond these countersunk 'parts one or more holes penetrate into the tooth mesio-distally to allow for metal connections.

The restoration can be constructed with much saving in cost, and fills many require ments of the dental profession.

The construction, combination and arrangement of parts as described herein and claimed as illustrated in the accompanying drawings Fig. 1 is a view per bridge showing the front and part of occlusal surface.

Fig. 2 represents metal devices inposition on artificial molar.

Fig. 3 represents porcelain artificial molar and metal devices readytoloe placed into position. V I I Fig. 4: represents porcela1n artificial molar showing buccal and distal sides and scheme of construction of tooth.

Fig. 5 18, a front view lllustratmg anterior upper bridge.

Fig. 6' shows side View of anterior porce lain artificial tooth with countersunk triangular shape in the side.

Fi 7 represents an upper central incisor with the metal retainers in position in the illustrating a posterior up- In the following description of my inven tion: to A. inclusiverepresent metal abutments which can either be cast goldinla-ys or gold crowns." B to B inclusive representthe porcelain artificial teeth used between the ab utnients and can either be an incisor, cuspid,

bicuspid or molar tooth. D andD represent metal retaining devices with projecting pins E and E The devices are. triangular in shape and of suitable thickness to act as a shoulder to 'iit under, the countersunk ledge Gr, made in thesideof the tooth. The pins pro ecting from the triangular shaped metal are of suitablesize to:complete the retentive ability of the device and to bear-the stress of occlusion-onthe tooth held by the devices.

teeth are cemented to themet-al parts.

' C shows a continuation of the holes through the center of the tooth in which pins E fit. It can be, seen that the two Ds soldered together form the union that holds B and B (Q, shows part sectional View oftoothin Fig. 3. v

G represents a section of the countersunk part shaped to receive D.

F shows the thickness of D, compared to the sizeof the tooth. v Pins E and E are of suitable size and strength to hold firmly whenceinented in C.

D represents metal retainers for anterior and cuspid teeth one angle of the device points towards the incisal oi": the tooth; the projecting pins. one above the other and projecting D s are shown in oosition on a brid e illustrated in Figure 5. The side view of B in Figure 6, shows G the dillerent position oi the triangular countersunk part for. anterior teeth and holes C in dillerent'position to those. shown in Figures 1, 2, 3 and 4. for posterior teeth.

The difiierent positions of'D for incisor teeth, to D for the posterior teeth, is illustrated in Fig. 4,'andFig. 6, with an angle toward the incisal and the pins, one above the that slide-into the 10 other.

other. 7

From the illustrations it can be seen, I have described my patent as triangular shaped The pins-ofD are level with each -metal parts, with projecting pins which fit tain position on those parts; the idea is to hold the porcelain teeth with metal parts which-fit 1n the mesial-and distal sides of them, and to use a modification of the shape in any manner that may be deemed best for carryingout the invention, without, however, do arting from the real spirit thereof.

'aving' thus described the nature and ob- .jects of my invention, what I claim as new and desire to secure by Letters Patent, is

1. An artificial tooth having an angularly shaped side socket and bores extending in wardly from the socket, and a metal retainer comprising a body portion seatable in said socket and. spacedpin elements integral with the body portion projectable into said-bores,

- said body portion having a flat face for sol dering to an abutment.

2. In combination, artificial characteristic sockets intheir sides, and par allel bores penetrating the teeth from the socket floors, and metallic units having integral portions receivable by the sockets and the bores and portions extending laterally from thesockets for attachment to adjacent teeth for supporting said artificial teeth directly from said adjacent teeth.

3. In a dental bridge, means for. supportteeth having ing adjacent artificial teeth between abut-y ments, comprising triangular shaped metal elements, each having a plurality of'pins projecting from one side, the sides of the ele, ments opposite the pins being adapted to be soldered together, and the artificial teeth bering provided with, recesses to receive the metal elements. a

In witness-whereof, I have hereunto. set 1 my hand.

CLEMENT G. MILLER. 

